I am NOT a music nerd.  I have music nerd friends. My wifesy is a music nerd. My brother is a music nerd and a music teacher.  I like music, but I’m very sad to say that I’ve become a bit of music-tardo.  I hear something and I like it, but I can’t name the group or the song title, most of the time.  Wifesy and I have a running joke and it is – sometimes I don’t know the difference between Led Zeppelin and Def Leppard.  Of course, I know now because Wifesy has found this eccentricity of mine appalling and I have thus been schooled.  Led Zeppelin is the groundbreaking British band with one of the best guitarists in the world and…